object complement or attributive

[xxwzs]

Here comes a sentence:
It must be someone having fun.
"It" is the subject and "must be" is the predicate. Then I classify "someone" as the predicative.
So, the controversy appears--"having fun" is the object complement or the attributive??

 

[bhaisahab]

As "predicative" is an adjective I wonder what you mean by "the predicative".

 

[MikeNewYork]

The terminology in this area can be confusing.

In my opinion (and terminology) "someone" is a predicate nominative. It follows a linking verb and reflects back on the subject. "Having fun" is a participial phrase acting as an adjective that modifies "someone".

 

[ronao]

Can we consider having fun to be a reduced relative clause ? Someone
(who is) having fun?
Thanks.

 

[MikeNewYork]

Yes.

 

[Matthew Wai]

"It" is the subject and "must be" is the predicate.

I think 'must be someone having fun' is the predicate, but I am not a teacher.

"having fun" is the object complement or the attributive??

I think 'having fun' cannot possibly be the object complement because it does not follow a direct object.

Can we consider having fun to be a reduced relative clause ? Someone
(who is) having fun?

Can we consider it ellipsis?

 

[MikeNewYork]

I wouldn't call it ellipsis.